MM74HCT244N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, CMOS logic level shifting, 3-state outputs
• Package: DIP (Dual In-line Package)
• Essence: Logic gate with 8-bit buffer/line driver functionality
• Packaging/Quantity: Available in tubes of 25 or reels of 2500 units

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 25 MHz
• Number of Inputs: 8
• Number of Outputs: 8
• Output Drive Capability: ±4mA
• Propagation Delay Time: 15 ns (typical)

Detailed Pin Configuration

The MM74HCT244N has a total of 20 pins. The pin configuration is as follows:

1. GND (Ground)
2. A1 (Input A1)
3. B1 (Input B1)
4. Y1 (Output Y1)
5. A2 (Input A2)
6. B2 (Input B2)
7. Y2 (Output Y2)
8. A3 (Input A3)
9. B3 (Input B3)
10. Y3 (Output Y3)
11. A4 (Input A4)
12. B4 (Input B4)
13. Y4 (Output Y4)
14. VCC (Supply Voltage)
15. OE (Output Enable)
16. Y5 (Output Y5)
17. A5 (Input A5)
18. B5 (Input B5)
19. Y6 (Output Y6)
20. A6 (Input A6)

Functional Features

• High-speed CMOS technology allows for fast switching times.
• 3-state outputs provide flexibility in connecting multiple devices.
• Logic level shifting capability enables compatibility with different voltage levels.
• Wide supply voltage range allows for versatile applications.

Advantages and Disadvantages

Advantages: - High-speed operation suitable for time-critical applications. - CMOS technology offers low power consumption. - 3-state outputs allow for bus sharing and reduction of signal conflicts.

Disadvantages: - Limited output drive capability may not be suitable for high-current applications. - Propagation delay time may introduce timing issues in certain scenarios.

Working Principles

The MM74HCT244N is a buffer/line driver IC that amplifies and buffers digital signals. It operates by receiving input signals on the A1-A6 and B1-B5 pins, and then driving the corresponding Y1-Y6 outputs based on the logic levels of the inputs. The OE (Output Enable) pin controls the output state, allowing the outputs to be either active or in a high-impedance state.

Detailed Application Field Plans

The MM74HCT244N is commonly used in various applications, including:

1. Data communication systems
2. Microcontroller interfacing
3. Address and data bus buffering
4. Clock signal distribution
5. Level shifting between different logic families

Detailed and Complete Alternative Models

Some alternative models to the MM74HCT244N include:

1. SN74HCT244N by Texas Instruments
2. CD74HCT244E by Texas Instruments
3. MC74HCT244AN by ON Semiconductor
4. 74HCT244D by NXP Semiconductors

These alternatives offer similar functionality and can be used as replacements for the MM74HCT244N in various applications.

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